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Method for combined pulse spectrum controlling engine EGR rate

An engine and mapping technology, applied in engine control, engine components, combustion engines, etc., to achieve the effects of improving real-time performance, correcting control lag, and improving control accuracy and speed

Inactive Publication Date: 2008-10-15
SHANDONG SHENPU TRAFFIC TECHNOLOGY CO LTD
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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a strategy for adaptively generating a dynamic map according to changes in engine-related characteristics and engine use conditions during the working process for the problems existing in the current gasoline engine control methods, and then Provides a method for controlling the EGR rate of the engine by combining the dynamic map parameters and the basic map parameters determined by the original prototype bench

Method used

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  • Method for combined pulse spectrum controlling engine EGR rate
  • Method for combined pulse spectrum controlling engine EGR rate
  • Method for combined pulse spectrum controlling engine EGR rate

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Embodiment Construction

[0047] The method that the combined map that the present invention proposes controls engine EGR rate is embodied in conventional controller (engine central controller ECU) and cerebellum joint controller CMAC in the realization of control function according to control strategy; Below in conjunction with appendix Figure 1-5 The implementation process is explained separately.

[0048] Such as figure 1 Shown: the control system includes microprocessor, cerebellar joint controller CMAC, ferroelectric memory, sensor signal, signal conditioning circuit, power drive circuit, EGR system drive, ferroelectric memory and cerebellar joint controller CMAC are interconnected, cerebellar joint controller The CMAC is interconnected with the microprocessor, the sensor signal is connected with the microprocessor through the signal conditioning circuit, the microprocessor is connected with the power drive circuit, and the power drive circuit is connected with the EGR system drive.

[0049] The...

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Abstract

The invention provides a method for controlling an engine EGR rate by a combined pulse spectrum, belonging to the vehicle gasoline engine control field, comprising a basic EGR rate pulse spectrum parameter and a dynamic EGR rate pulse spectrum parameter, wherein, the basic EGR rate pulse spectrum parameter is standardized by a jack horse or optimized and standardized by the jack horse and a road parameter, the dynamic EGR rate pulse spectrum parameter is generated by the self-standardization of the self-study on line of a control system and the self-optimization, and the adaptively control of the EGR rate of the gasoline engine is controlled by the control system according to a control strategy. The combined pulse spectrum control way synthesized by the self-adapting study method is adopted; therefore, the influence of the change in a controlled system and the unknown change on the engine is corrected, thereby improving the control accuracy of the open-loop control and increasing speed. The self-adapting study controls the strategy generating a dynamic pulse spectrum and advances the predictive control, thereby correcting the control lag generated by various time-lag effects and improving the timeliness of the control.

Description

technical field [0001] The invention relates to a method for controlling the EGR rate of an engine by combining maps, belonging to the field of automobile gasoline engine control. Specifically, the dynamic map generated by self-adaptive learning and the original basic map constitute a combined map to control the engine. Background technique [0002] The control of gasoline engines for vehicles is divided into fuel injection control, ignition control, intake control, emission control and other auxiliary control systems; the fuel injection and intake air are related to determine the air-fuel ratio control, and the ignition control is the ignition advance angle and ignition closure rate. control, the EGR rate is applied for emission control. [0003] During the control process, the control unit checks the control map according to the basic control conditions, and corrects and outputs the control map according to the engine state conditions reflected by each sensor, and control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D21/08F02M26/47
CPCY02T10/121Y02T10/12
Inventor 高小群宫春勇赵华
Owner SHANDONG SHENPU TRAFFIC TECHNOLOGY CO LTD
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